期刊
POLYMER
卷 217, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2021.123478
关键词
Fluorinated acrylates; Non-bioaccumulative; Perfluorooctanoic acid; Water and oil repellency; X-ray diffraction analysis
资金
- ICR-JUCR, Kyoto University, Japan [2019-121, 2020-125]
Novel polyacrylates with vinylene-bridged fluoroalkyl side chains were successfully synthesized to prevent the formation of bioaccumulative polyfluorinated compounds. These polymers exhibited excellent surface properties, making them promising alternatives to conventional analogues.
In this study, unprecedented polyacrylates with vinylene-bridged fluoroalkyl side chains (-(CF2)(6)-CH = CH-(CF2)(5)CF3) were successfully synthesized. These polyacrylates comprise short perfluoroalkyl groups, thus allowing to prevent the formation of bioaccumulative polyfluorinated compounds including perfluorooctanoic acid (PFOA). The bulk organization and surface properties of these polymers were investigated by differential scanning calorimetry, X-ray diffraction analysis, and contact angle measurements. Thin films of the novel polyacrylates bearing the -(CF2)(6)-CH = CH-(CF2)(5)CF3 groups exhibited excellent water and oil repellency comparable to those made by conventional polyacrylates bearing C8F17 groups. A novel polymethacrylate bearing the -(CF2)(6)-CH = CH-(CF2)(5)CF3 group showed low surface energy and low contact angle hysteresis despite of its amorphousness in the bulk state, which is very different from conventional polymethacrylates bearing a C6F13 group. Therefore, these polyacrylates bearing vinylene-bridged fluoroalkyl side chains are promising alternatives to conventional analogues containing long perfluoroalkyl side chains.
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